2005wagonbew
New member
I can't find an answer literally anywhere! 2005 bew wagon. I ordered a brand new 'proclaimed bew' catless turbo-back exhaust but it didn't come with a bung for the O2. (It was for an alh and they just decided to say it was compatable with bew) I live in WA state with no emissions to pass and I've already deleted the EGR. Can anyone explain why I should leave the O2 sensor in? I'll say again: no EGR, no emissions to pass, no cat. The car drives fine without the sensor but I'm worried my AFR will be affected..